Excavating machine



June 30, 1925.

`1,544,054 E. J. ARMSTRONG f EXCAVATING MACHINE Filed Junev 14, 1924 2 Sheets-Sheet l www to@ 'ZW June 30, 1925. 1,544,054

. E. J. ARMSTRONG EXCAVATING MAHINE Filed June 14, 1924 2 Sheets-Sheet 2 Svi/umm @Mommy l Patente .l une 39,. 1925.

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EDWIN J. ARMSTRONG, OF ERIE, PENNSYLVANIA, .ASSIGNOR T ERIE STEAM SHOVEL COMPANY, OF ERIE, PENNSYLVANIA, A CORPORATION 0F PENN- SYLVANIA.

EXCAVATING MACHINE.

Application led .Tune 14, 1924. Serial vNo. 720,128.

To all whom t may concern.'

Be it known that l. EDWIN J. ARM- STRONG, a citizen of the United. States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful lmprovements in Excavating MaA chines, Iof which the following is a specificaJ tion.

lt has been proposed to actuate power excavating machines by compressing air with an internal combustion engine and using the air on some of the motors of the machine. Vith the standard type of machine involving a turn table on which the mechanism is mounted it has been difficult to install the compressors and motors for accomplishing this purpose. vention is designed to simplify and provide a convenient means lof mounting the parts of such mechanism forvmachines along the lines of the application of Arthur C Vicary, Serial Number 620,727. filed Feb. 23, 1923 and my applications, Serial Numbers 621.336 and 621337,`iled Feb. 26th, 1923.

The invention is illustrated in thel accompanying drawings as follows Fig. llshows a side elevation of the machine, partly in section.

Fig. 2 a plan view of such a machine.

I1 marks the truck, 2 the wheels of the truck. 3 the turning platform, 4 the gear 'mounted on the truck. 5 a. pinion operating on the gear 4. 6 a shaft on which the pinion r' 5 is mounted. 7 a beveled gear mounted on the shaft Gfabove the platform, 8a beveled gear meshing with the beveled gear 7 and 9 the turning engine operating the beveled gear 8. ln the present construction the turning engine is actuatedby compressed lill'.

A boom l0 extends from the front of the machine. A dipper 11 has the yusual dipper stick 12 with a rack 13. The rack 13 operates on a pinion 14. The pinionis mounted on a shaft 15. A ear 16 is also fixed on the shaft l and mes es with a gear 17. The

' gea1y17 is driven direct by the crowding engine. 18 `mounted on the boom.

A hoisting line 19A extends from a drum 20 over a sheave 23 at the upper end of the boom and through a sheave 22. The sheave 22 is connected with the di vperby a link 23. A primary motor 24 whic is of the interiXed on the shaft 29.

vframe.

The present innal'combustion type has the drive or crank shaft 25 on Which is mounted a pulley 26. A belt 27 extends from the pulley 26 to a pulley 28. The pulley 28 is mounted on a crank shaft 29 and this crank shaft is journaled in bearings 30 in the frame of the platform of the machine. A pulley 31 is A belt 32 extends from the pulley 31 to a pulley 33. The pulley 33 is mounted on-a shaft 34. The shaft 34 is mounted in bearingsl 35 carried by the A transmission 36 is arranged on the shaft 34 and also a pinion 37. The pinion 37 meshes with a drum gear 38. The gear 38 is mounted on a shaft 38EL carrying the drum 20 and the shaft is mounted in bearings 38h. A clutch 39 isl adapted to connect the gear 38 with the drum 2O and a brake 4() is provided with the drum in the usual manner. A gear 41 is mounted on the shaft 38a on the opposite end of the drum 20 and meshes with a gear 42. The gear 42 is mounted on a shaft 43. A beveled gear 44 is fixed on the shaft 43 and meshes with a beveled gear 45. The beveled gear 45 is fixed on a vertical shaft 46 at the axis of the machine and extends to below the truck and drives a beveled gear 47. The beveled gear 47 drives a shaft 48 which in turn drives the driving axle 2a and thus drives the machine. .A clutch 49 is arranged for locking the gear 41 with the shaft 38v when it is desired to move the machine.

-When the clutch is disengaged the clutch 39 engine are driven indirectly from said internal combustion motor through the air agency.

A compressor rear of the platform.

frame '51 extendsfrom the lt may be formed inlegrally witlithe platform as shown but the making of it.integrally with the rest of the platform/depends on the convenience and facility of manufacture. It is provided with a series of cylinder receiving' openings 52 which have flange securing faces 53. Cylinders ,5.4 are formed with a head 55 which is secured to the securing faces 53, the cylinders extending into the openings 52. The pistons or plungers 56 of the compressors are arranged inthe cylinders and are driven by connecting rods 57 from cranks 58 on the crank shaft 29.A

It will be observed that 'the internal combustion engine ismounted directly on the compressor frame and directly over the compressor. This properly distributes the weight and economizes the space. The compressor cylinders are accessible from the end of the platform and the power shaft is at themost convenient position for attachment to the hoisting drum. At the same time. the weight of these parts is properly distributed to operate in connection with the work of the shovel.' The discharge'pipe 59 of the compressor leads toa receiver 60. A pipe 61 leads from the receiver to the common turning engine 9 and an extension 62 of the pipe 61 leads to the crowding engine 18 extending through a joint 63 on a line with the axis 64 of the boom. v

What I cla-im as new is y 1. In an excavating machine, the combination of a turning platform; a compressor 'frame formed at the rear ofthe platform; a motor mounted over the compressor; and excavating devices driven by the fluid compresse 2. In an excavatingmachine, the combination of a turning platform; a compressor frame formed at the rear of the platform; a motor mounted over the compressor-and on the compressor frame; and excavating devices driven by the' fluid compressed.

'3. In an excavating machine, the combination of a turning platform; a compressor frame formed at the rear of the platform having openingsv for receiving compressor cylinders; compressors comprising compressor cylinders mounted in the openings; a motor mounted on the compressor frame drivin the compressors; and excavating de vices riveli by the compressed fluid.

4. In an excavating machine, the combi nation of a turning platform; a compressor frame formed at the rear 'of the platform having an opening for receiving a compressorv cylinder, said opening opening at the rear; a compressor comprising a cylinder secured to the rear of the platform and extending into the opening; a motor driving the compressor; and excavating devices driven by the compressed fluid.

5. In an excavating machine, the combination of a turning platform; a compressor frame formed at the rear of the platform having an opening for receiving a conipressor cylinder, said opening opening at 'the rear; a compressor comprising a cylinder secured. to the rear of the platform and extending into the opening; a motor mounted on the 'compressor driving the compressor; and excavating-devices driven by the compressed fluid.

6. In an excavating machine, the combination of a turning table; a boom extending from the table; a dipper on the boom; a compressor frame formed at the rear of the table; a motor mounted on the compressor; and means actuating the dipper yactuated by the fiuid compressed.

7. In an excavating machine, the combination of a turning table; a boom extending from the table; a dipper on the boomta compressor frame formed at thel rear of the table; a motdr mounted ou the compressor; and means actuating the dipper comprising a crowding engine and a turning engine driven by the fuid compressed.

8. In an excavating machine, the combination of'a turning table; a boom extending from the table; a dipper on the boom; a compressor frame formed at the rear of the table; a motor mounted on the compressor; means actuating the dipper comprising a hoisting drum; means directly connecting the drum with the motor; and a crowding engine driven by the fluid compressed.

9. In an excavating machine, the combination of a turning table; a boom extending from the table; a dipper on the boom; a coinpressor frame formed at the rear of the table; a motor mounted on the compressor; means actuating the dipper comprising a hoisting drum; means directly connecting the drum with `the motor; a crowding engine; and a turning engine driven by -the fluid compressed.

In testimony whereof I have hereunto set my hand.

EDWIN J. ARMSTRONG. 

